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Fork of PM 2.5 Particle Change in US

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Xxychen0612.cs09@nycu.edu.tw
Last edited Oct 26, 2023
Created on Oct 26, 2023

This interactive choropleth map shows the change in PM2.5 particulate matter concentrations across US counties from 2000 to 2018. A vertical slider and play button animate through years, with counties colored on a sequential YlGnBu scale where darker blue indicates higher pollution levels. The visualization uses D3 v5 geo projections via `d3.geoIdentity` and `d3.geoPath` to render TopoJSON county boundaries from the US Atlas, with React managing the state and year updates. County-level PM2.5 data comes from a CSV file, and hover tooltips display exact values.

AI-generated description

A demonstration of how to start using D3 version 6.

MIT Licensed

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